Piston-ring placer.



J. GANDEE.

PISTON RING PLACER.

AEPLICATION FILED OCT. 13,1917.

Patented Apr. 9,1918.

' s er- .mivrns GANDEE; or LANCASTER}; PENNSYLVKN'I'A; alssrsno'rr as IAtENRY BRINSER KEEPER; or tanoasrna, rnmvsiznvame.

sisters-me states.

specification of iietters fatent;

Patente'd Apr;

salsa-0a fii'ed' estate 13; are: seen my w re.

Be it known that 1, JAMES Gimmes, a citi- Zen of the United states; residingat Lamas: tear, in the county or Lancaster and State of Pennsylvania, have invented certain i'ie'iv and useful improvements in listoii-Riffig' Placers; and} do hereby decrare the renewing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertaifis to make and use the same.

This invention relates to" machines or C'l} vices employed in assembling or placing piston packing rings in the grooves or pi"- tohs, and has for its object to provide a siftip'le inexpensive and ellicien't' device for expanding th rings' andpl acirig their; in the grooves hout of distorting or breaking the rings by aerate expanses, which results from the present practice o'f expanding andassembling piston rir'rgs' and pistons by hand. r

The invention will first be" hereinafter were partichlarly assented, \vi'th referenee to" the" aceolnpanyin arrang wares form a part of this speci'rcatiorr, and then pointed out inthe clain'is' at the" end of the do scription: y 7) I in sjid drawings, Figure 1 represents a side elevation or piston rin bo' lyingi my invention; a portion of tht is: to which the device is applied being in- (tenacity dotted line Fig; 2' is an inverted or bottom plan View of the" device;

Fig, 3 is a vrtlcal sectional view,- taken onth'e' line ofFig. 2, and

Fig. at is a detail perspective View of one of the spreader blocks detached;

Referring to {vhich the same reference characters are used to denote corresponding parts in dififerent view s, the letters A and A may denote" nie tzfl' frame plates between which are placed at equal distances apart gear Wheels B, preferably three, each of which is journaled upon a bolt or screw 1), which is passed through an aperture in one of said plates and screwed into an opposed aperture in the other plate, so as to secure the two plates together With the gear Wheels therebetween. The gear Wheels B are adapted to engage an intermediate pinion O, which is secured to a shaft D, to which is secured a cross-bar or handle 15, by vvhich' rotary motion m beiniparted thereto and threag'h the piion thereon to the gear Wheels" B, so are) cause and gear wheels to rot tie in' unison and an in the same direction". Each gear when carries spreader arin 0', aivlii'ch r'e'volubly fitted a substantially semi-cisternblock E, said titers being arranged concentric was the 5 G and adapted to be rnoved by rotation if the gear wheels laterally and radially 61 in outward direction away from pinion, for the purpos f expanding a piston ring placed over s blocks, as in c'li cfited in Figs; 1 and :2 or the drawings; The spreader arnis e protrude through are: slots in the among which that travel aslth e gears rotate By the (resented; a'ri 'nge'nient', the sq n er blocl'rs may be nfoved outwardly more easily and gradually and with greater levera e in effect ng the expansion of the piston nag tlfztn more direct radial inns, and thus too sudden or violent ex;-

on of the; piston ring, with consequent liability to* distortor' break the same, preve' ed as a very expansion of th r1 effected by a coinpa tively: lengthy never-neat or" the expandi g devices; and sum in ovefint remap-fished without eiterting inuch fer-Ce or power, owing to the increased leverage dn'e t o" the movement or the expander blo'lis simultaneously along both merelradial lines. The expander weeks are each preferably formed with longitudinal depression or recess e in which isflsecu'reaby means of s't serw er steer raetaiagaeviee a flat or rear spring F," said" springs being aaa teato over ap the iidof the piston and provide guide way along when the piston has re be Pla ed math sr ve WhiQh. s iar hesh emovegr from the end ()f the piston he slid over and past the grooves which are nearer said end and snapped into the first named groove, whereupon the expanding device may be slightly raised, to bring the ends of the springs above the next groove in the series, and thereupon another piston ring may be slid over the piston and. snapped into the next groove, and so on until all of the grooves are fille'd. The gear frame may be of any suitable construction, but is preferably of the clover-leaf form shown, and is provided with a suitable handle G, preferably a split wooden handle secured to a tang g, projecting from the frame plates between which it is secured.

It will be understood of course that various changes may be made in the form and arrangement of parts without departing from the spirit and scope of the appended claims. The leaf springs may be shortened or lengthened to suit pistons of different sizes having a greater or less number of grooves in which packing rings are to be placed, and a greater or less number of gear wheels with radially movable spreader arms may be employed, according to the desire of the maker and different requirements in practical use. Spreader blocks such as shown are preferably employed, capable of turning easily on the spreader arms to permit the placing of the piston ring around the same in different positions of said blocks. 7

7 Having thus described my invention, what I claim as new and desire to-secure by Letters Patent of the United States is:

1. A piston ring placer comprising a frame having a handle, a shaft journaled in said frame carrying a pinion, a plurality of gear wheels meshing with said pinion, and spreader arms carried by said gear Wheels, whereby a piston ring encircling said arms may be expanded by the rotation of said pinion.

2. A piston ring placer comprising a frame having a handle, a shaft journaled in said frame carrying a pinion, a plurality of gear Wheels meshing with i said pinion, and spreader arms carried by said gear Wheels, concentric with said pinion and movable along lateral and radial lines by the rotation of said wheels, so as to gradually recede from the center and expand a piston ring placed around said arms.

3. A piston ring placer comprising a frame having a handle, a shaft journaled in said frame carrying a pinion, a plurality of gear wheels meshing with said pinion, and spreader arms carried by said gear wheels protruding through arc-shaped slots in said frame and movable in said slots along lateral and radial lines when said Wheels are 1'0- tated, whereby a piston ring encircling said arms may be expanded by the rotation of said pinion and gear wheels.

i. A piston ring placer comprising frame plates having a handle secured thereto and gear wheels journaled therebetween, a pinion journaled in said frame intermediate said gear wheels and meshing therewith, spreader arms carried by said gear wheels each having a contact piece of block revolublysecured thereto, and springs secured to and projecting beyond each of said blocks parallel with said arms, whereby a piston ring placed around said blocks may be expanded and slid into a groove beyond the ends of said springs past other grooves underlying said springs.

5. A piston ring placer comprising frame plates of clover-leaf-like form secured. together and having journaled 'therebetween a gear wheel in each leaf-like section, a centrally disposed pinion meshing with each of said gear wheels, a shaft journaled in said frame on which said pinion is fixed and having a handle for rotating the same, each of said leaf-like sections having an areshaped slot therein, spreader arms projecting from said gear wheels through said slots.

and a revoluble spreader block carried by each of said arms together with a spring projecting beyond each block parallel with said arms.

6. In combination, a frame consisting of spaced metal plates of clover-leaf life form secured together and having a gear wheel journaled therebetween in each leaf-like section thereof, a centrally disposed pinion meshing with said gear wheels, a handle projecting from said plates, a shaft carrying said pinion having a handle for rotating the same, spreader arms projecting from said gear wheels parallel with said shaft, and flat springs projecting from saidv spreader arms along which an expanded piston ring may be slid into a groove past other grooves in the piston underlying said springs.

In testimony whereof I aflix my signature in the presence of two witnesses.

JAMES eannnn Witnesses:

FRANK S. NneLnY, 7 CHARLES F. SUMENT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner oi Patents.

Washington, D. C. 

